Improvement in carriage-wheels



H. GWYNN. Garriaga Wheels.

Patented Dec. 16,1873.

Attorneys.

UNITED STATES PATENT QFFICE.

HENRY GWYNN, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN CARRIAGE-WHEELS.

Specification forming part of Letters Patent No. 14 5,6 16, dated December 16, 1873; application filed September 3, 1873.

To all whom it may concern:

Be it known that I, HENRY GWYNN, of Baltimore, State of Maryland, have invented a new and Improved Oarriage-WVheel 5 and I do hereby declare that the following is a full, clear, and exact description of the same, ref erence being had to the accompanying drawing forming a part of this specification.

Figure 1 is a front view, partly broken away. Fig. 2 is a longitudinal central section. Fig. 3 is a front View of hub, flange 61 being broken away on upper half. Fig. 4 is a'detail view of wedge g.

The inx'ention relates to the construction of carriage-wheels, so that they may combine the requisite strength, and while the tire may be put on cold, one spoke removed and replaced or tightened, without disturbing the others, and the spokes always kept perfectly tight in the hub.

. It will first be fully described in connection with all that is necessary to a full understandin g thereof, and then clearly pointed out in the claims.

A represents a-cast-steel shell, tapering on the inside from the inner to the outer end, and

having fitted within it four or more pieces of Wood, b,'tbrmin g the j ournal-box, which is prevented from rotating, except with the hub, by the metallic V-shaped feathers E, that form a part of and project from said cast-steel shell. The sections are driven into the shell from the inner end thereof. The shellA projects at the outer end over the nut that fastens the wheel to the axle, said nut bearing against the ends of the feathers, as also against the wooden journal-box. Formed on the exterior of the shell A is a circular flange, a, on the inner f face of which, at the circumference, are inward projections a, the spaces between said projections being equal to the thickness of the spokes, between which they project and hold in place wedges. Between the "flange a and a screw thread, 6, cut on the shell A, is formed a flange, cl, having a polygonal perimeter, and between this flange and the flange a. is a groove, f, for the reception of wedge-shaped pieces of wood, 9. Removably fitted to the flange d is a flange, B, of corresponding size and form with the flange a, and between which and the latter the spokes are clamped by means of the nut c forcing the flange B upon them, and with sufficient play to insure at all times the tightness of the spokes within the hub. Each spoke, when of the proper length, rests upon the inclined piece of wood g,- but, if a little short, a wedge may be driven between it and the wooden piece g, and in this way each spoke may be tightened independently of every other spoke. In this way, also, the tire, which is put on cold, may be tightened.

Having thus described my invention, what 1 claim as new, and desire to secure by Letters Patent, is-- 1. The wooden sections I), forming the journal-box, in combination with the metal shell A, having the inner projections E, as shown and described, for the purpose specified.

2. The combination, with the metal shell A, having flange a with inner projections a, and the flange d with polygonal perimeter, of the movable ring 13, fitted on flange I, and theadjusting screw-nut c, for the purpose of forming a socket for the spokes, securing them in position, and permitting their removal, as specifled.

3. In combination with the spokes and flanges a and B of shell A, the wedges 9, arranged as shown and described, for the purpose spech fied.

HENRY GWYN N. WVitnesses;

SoLoN O. KEMON, vGH s. A. PETTIT. 

